So I went to the track the other night just to try out the ProEFI traction control. I put on my Toyo DRs intending to hit the tire pretty hard and get some wheel spin to see what kind of difference it makes. I gotta say I was pretty happy with how well it worked. Here were my runs in order. These are 1/8th mile times and each pass I hit the tire with 12 or more psi at 4200+ RPM. Normally I would have spun well into 2nd gear and run higher than 8sec if I launched like that on a bad track with these tires.
7.64 1.84 60ft (left lane)
7.67 1.85 60ft (left lane)
7.52 1.75 60ft (right lane)
7.54 1.76 60ft (right lane)
I lined up against a blown 05 S06 vette and had to give him the business so I pulled back on launch RPM and boost and ran a 7.30 1.57 60ft. Obviously traction control doesn't give you traction, it only helps you control slippage. Driving the car for the conditions will always be optimal but as you can see when you do get slippage, traction control can really help you from completely wasting a run. I can't believe how consistant the car was considering I just let it fly on the launch. Another thing I didn't expect was when I didn't have to focus so much on driving the car off the line, my reaction times were better. Anywhere from .520s to .600s and I really wasn't trying to be on my light (except for running the vette). Normally I have to balance launch RPM and boost with when I leave. I just left when I wanted and let the TC worry about the tire slippage.
I attached a pic of the front tire speed, rear tire speed, and the slippage for one point in time. The dip is when the speed differential goes to a point where timing isn't getting it done, the soft rev limiter steps in and give the tires a chance to catch up. You can tailor the amount of slip and how the ECM reacts to optimize acceleration. This was my first ball park estimation and isn't remotely tuned to the best it can be. It was just a stab in the dark and actually worked out pretty well! I allow significant slip at low speeds then tone it down as front wheel speed increases.
Another huge advantage I realized was that I could force the tires to plant before it gets into 2nd gear which is CRITICAL with keeping the stock ATM in once piece. Even 6spd cars on DRs can benefit by stopping wheel hop before the diff gets hammered apart. The whole time the TC was activating the car was still pulling forward without the typical fall on its face reaction of most OEM traction controls. That of course is tuning dependant.
I use the factory trac switch to turn it on and off and the OEM trac light to tell me when its on/off or working. I can set it so the trac is automatically off or on when you start the car. Its actually much better to drive this way and I leave it default to on with the only time I shut it off is for the burn out. I can have it so that if I have my foot on the brake, it will disable so I can do a burnout and race without ever touching the button.
All I can say is on a crap night, I still ran pretty respectable times and consistant most of all! Overall I am very excited to have it set up. On the street its pretty sweet as I can lay on it and let the car take care of itself.
7.64 1.84 60ft (left lane)
7.67 1.85 60ft (left lane)
7.52 1.75 60ft (right lane)
7.54 1.76 60ft (right lane)
I lined up against a blown 05 S06 vette and had to give him the business so I pulled back on launch RPM and boost and ran a 7.30 1.57 60ft. Obviously traction control doesn't give you traction, it only helps you control slippage. Driving the car for the conditions will always be optimal but as you can see when you do get slippage, traction control can really help you from completely wasting a run. I can't believe how consistant the car was considering I just let it fly on the launch. Another thing I didn't expect was when I didn't have to focus so much on driving the car off the line, my reaction times were better. Anywhere from .520s to .600s and I really wasn't trying to be on my light (except for running the vette). Normally I have to balance launch RPM and boost with when I leave. I just left when I wanted and let the TC worry about the tire slippage.
I attached a pic of the front tire speed, rear tire speed, and the slippage for one point in time. The dip is when the speed differential goes to a point where timing isn't getting it done, the soft rev limiter steps in and give the tires a chance to catch up. You can tailor the amount of slip and how the ECM reacts to optimize acceleration. This was my first ball park estimation and isn't remotely tuned to the best it can be. It was just a stab in the dark and actually worked out pretty well! I allow significant slip at low speeds then tone it down as front wheel speed increases.
Another huge advantage I realized was that I could force the tires to plant before it gets into 2nd gear which is CRITICAL with keeping the stock ATM in once piece. Even 6spd cars on DRs can benefit by stopping wheel hop before the diff gets hammered apart. The whole time the TC was activating the car was still pulling forward without the typical fall on its face reaction of most OEM traction controls. That of course is tuning dependant.
I use the factory trac switch to turn it on and off and the OEM trac light to tell me when its on/off or working. I can set it so the trac is automatically off or on when you start the car. Its actually much better to drive this way and I leave it default to on with the only time I shut it off is for the burn out. I can have it so that if I have my foot on the brake, it will disable so I can do a burnout and race without ever touching the button.
All I can say is on a crap night, I still ran pretty respectable times and consistant most of all! Overall I am very excited to have it set up. On the street its pretty sweet as I can lay on it and let the car take care of itself.
Keep it up!
